• 打印调用堆栈，

hook 某个方法，想看下调用堆栈，代码如下：

function showStacks() {Java.perform(function () {send(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Exception").$new()));});}

二，需要hook okhttp3 HttpUrl 参数

function hookOkhttp3() {    var Builder = Java.use('okhttp3.Request$Builder');    Builder.url.overload('okhttp3.HttpUrl').implementation = function (a) {        console.log('get a: ' + a)        var res = this.url(a);        console.log("res: